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DEMODULATION REFERENCE SIGNAL BASED CHANNEL STATE INFORMATION FEEDBACK IN OFDM-MIMO SYSTEMS
DEMODULATION REFERENCE SIGNAL BASED CHANNEL STATE INFORMATION FEEDBACK IN OFDM-MIMO SYSTEMS
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机译:OFDM-MIMO系统中基于解调参考信号的信道状态信息反馈
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摘要
A method and apparatus for using demodulation reference signal (DM-RS) based channel state information (CSI) feedback in Orthogonal Frequency Division Multiplexing-multiple-input multiple-output (OFDM-MIMO) systems is disclosed. A wireless transmit/receive unit (WTRU) may include: a receiver configured to receive broadcast information from an eNodeB, wherein the broadcast information is received by a plurality of WTRUs; and a processor configured to derive, from the received broadcast information, physical resource blocks having demodulation reference signals (DM-RS) and precoding information of the DM-RS; the receiver and the processor further configured to derive a channel estimation using the DM-RS received in the physical resource blocks, wherein the plurality of WTRUs derive a channel estimation using the DM-RS received in the physical resource blocks.
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